Double sectional boiler.



v 36 W I J. B. BERNHARD.

DOUBLE SEUTIONAL BOILER.

APPLICATION FILED DEC. 2, 1909.

Patented D0.27,1910.

4 SHEETS-SHEET l.

' ATTORNEYS J. B. BERNHARD.

DOUBLE SECTIONAL BOILER.

APIL'IGATION FILED DEC. 2, 1909.

979,73 Patented Dec.27,19 10.

4 SHEETS-SHEET 2.

A lAlif/VTOR WITNESSES:

Arm/mm J. B. BERNHARD.

DOUBLE SEGTIONAL BOILER.

APPLIOATIAON FILED DEC. 2, 1909.

Patented Dec. 27, 1910.

4 SHEETB-BHEET 8.

lYlllllHlll I,

'i'lTmmuiun if 49 5 unmuummwmnmw' III ATTORNEY J; B. BBRNHARD. DOUBLE SECTIONAL BOILER.

APPLICATION FILED DEG. 2, 1909.

Patented D60.27,1910.

4 SEEETS-SHEET 4.

ATTORNEY UNITED 'sTArns PATENT OFFICE.

JOHN BLOOMFIlELD BERNHARD, 0F .NEWARK, ,NEW JERSEY, ASSIGNOR To UNION,

BOILER COMPANY, OF NEWYORK, N.' Y.,' A CORPORATION OF NEW JERSEY.

OUBLE jsno'rrona'n BOILER,

To all whom it may concern:

Be itv known that I, JOHN B ooMrmLn of Essex, andState of New Jersey, have invented certain new and useful Improvements in Double bectional Bollers, of which the following is a specification,reference 'be V in had therein to'the accompanying draw-t b ings, in whichi Figure 1 is a front elevation of the bolier complete; Fig. 2a-rearelevation thereof; Fig. 3 a longitudinal vertical seetionalfview taken on the line IIIIHI of Fig. Fig 4 a transverse sectional view taken on theline IV-1V of Fig, 3; Fig. 5 an end elevation; F 1g. 6a'vert1c'al longitudinal sectional view of one end oftlie boiler taken on) the v V I v damper-regulating device 6. Theinterme line VIVI of Fig. 4; and Fig; 7 aat'ra'nsverse sectional'view showing themiddle or dividing water section in side elevation.

The inain object of thisinvention isto provide a steam boiler formedof a plurality of watersections or legs, each of'saidlseetions extending from frontto "rear of the boiler and being provided withlateral openings therein, whereby the fire-travel or path of the products of combustion will; be later;

ally through the furnace, thatljis to say, from side to side, and tojembody ln suchia furnace a dividing waterj sect on or leg to interrupt the fire travel atabout the middle of the furnace, said'dividing section extending to the grate level,wherebythe furna'ce will be divided in-totwo parts, each i parte having a separate and independent fire travel and an independent smoke outlet. By} this means either end of the furnace may be used as desired witlioutit being necessary to passthe' products ofcombustionthrough I the other end.

Another object ofthe inventionis to con nect together the water sections on each Iside of the dividing section with suitably valved,

pipes and to connect the dividing section to said pipes in'such a 'manner'that all of the sections will be simultaneously charged'with water, and steam may flow from them; The

water-charging pipes are connected tothe lower ends of the sections, and the steam outlet-pipes are connected to the tops of said sections. Suitable valves are provided so that communication between the two sets of water sections maybe closed whenever Specification of'Letters Bate ntg P t nt 27 9 Application filed December 2, 1909. Serial No. 539,320. a

one section orpa'rt oftli'eboiler is out of use." .i

H In constructing my improved boiler I may employ fornr of water i section or leg, but I prefer tons'e the form of water leg shown ininyj Patent No. 79;,773, dated July 18, 1905, which will permit of a lateral or slde travel ofthe tire.gases. I have shown this form ofwyater section in the drawings,

but deem unnecessary to make a detail description ot 1t, except as -may be necessary to definet'he present,invention. .1

' Referringto the various parts by numer ale, 1 designates the ,2 end sections, each lo each these sections 1. also connect afwateielevelindicating glass 4; a,

steam gage 5, and a pressure-controlled diate water sections or legs .7, as'he'reinbefore statedfareof the same shape and con.-

struet-ion as those shown inmy previouslyiot whi'ch jis provided with clean-out doors mciitionedgjpatent, each being formed with the front portion 8 adapted to rest on the front wall oflthe it'urnace; a crown-sheet portion i); asteam dome portion 1( a rear return water passage 11; a pedestal 12, and an upwardly and forwardly-extendingthin overhanging portion: 13 which overhangs scribed in said patent, sojthat thefproducts of combustion pass three times through them before entering the smoke outlet. 7

. Midway between the end sections-is ar 1 ranged a vertical dividing' section 16, said section being at the same shape in exterior outline as the water sections. :Thissection is formed with the front portion -17 and with the. f rear pedest al portion 17., Which; r i

conforms in'fshapeto the correspondingportions of the water sections and restson the support' which. carries all the other boiler sectiona jThisi idividing section; is hollow to containwaterf It is blank, that is to say it-"is not provided withtransverse openings, and, thereforeprevents the passage of the productsof combustionin eachvend of the boiler beyond the dividing section." The boo short inclined section 19 of the grate being" arranged-between its lower edge and the adjoining grate surface. By this means fire and ashes will be prevented from passing from one section of the grate under the dividing watersecti'on, in either dlrectlon.

sections fire-travel isfirst fromlthe outer sections inwardly toward the dividing section; thence upwardly into the flue above the'cro'wn' sheet portions; thence outwardly to the end sections, through passages in the end sections and down; into the large return flue; and thence inwardly through saidfluc to the dividing" section; and. thence out;- wardly'to therear of the boiler through the smoke outlet and into the stack.

" To provide suitable passages 4 through which the products of combustion may pass upwardly into theflne A above the'crown sheet portions, said crown sheet portions of the two inner water legs, s to say, the' legs ad ommgthe dlvidmg sect on, are cut away, asat 9 to provide two passages,as shown clearly in Fig, 3. The end sections are provided'wlth suit-able extenslons 1 to form'flues'whic'h connectthe fluesA' above sheet portions with thereturn;

the crown fines B.

To enable me to arrangeithe smoke outlets atthe back-of thefurnace close to the dividing section, the rear water-return passages of the two inner flues are cut -away,"as shown at 20 to form an outlet-from-the ifire-return flue. To the rear of the furnace are'secured two plates 21 providedfwith openingsi22 which register with the opening 20 between the inner water-sections.

openings may be individually controlled. i The lowerends of the pedestals jofthe di-, viding' section and theadjoining water legs are connected together by water inletpipes 24 and 25, said pipes being provided with valves'26 and 27, so that water may be sup: plied to either end of the boiler, the divid- .5(') mg section being always supplied withwa ter. The upper ends of the steam'domes of the dividing section and the adjoining water sections are provided with steam outlet pipes 28, 29 and 30,=thesepi'pes being provided with valves 31 and 32 in order that the fiowof steam from either end of the boiler maybe shut off. Each end of the boiler is provided with-a safety valve 83 and the dividing section is similarly 1 provided with a safety .valve34. V

The forward portion of the dividing sec-1 tion is connectedby pipes 35'to the front wall portions 36 so that water may circulate from said frontwall sections intoIthe dividing section. The front wall sections are also in. communication through pipes 37 7 Each smoke outlet is provided with a damper28 so that said with the end sections; and the boiler front sections are connected together by. water 'bymy arrangement ofwater sections and the dividin section I provide an apparatus which may he used'as one boiler, but which, if desired, maybe separated into two parts In my present arrangement of the water" so that one part only may be usedas a boiler having the capacity of one-half of the complete apparatus. The efiect is to provide two boilers which maybe used together or separately while at the'same time-saving materially in floor space necessary for two boilersand materially reducing the cost of the two. boilers. 7 By dividing'the fire box into two portions it is clear that even when the apparatus is used as a single boiler the a fires may be independently controlled and a 'low fire maintained under one portion of the boiler, while an intense fire maybe made under the other portion thereof. ,It is manifest that there are many other advantending downwardly to the grate level'and being-without lateral passages and serving 'to i'nterrupt the. fire, travel and, divide the fire box into'two portions, intermediate water legs or sections arranged between the endsections and the dividing section,- each of said intermediate water sections being formed'withfa'steam domeeportion, a crown sheet portion, flue openings between .-the

steam. dome portions and the crown, sheet portion, an upwardly and forwardly extending portion over-hanging the fire box, a rear return water portion and an upwardly extending portion forming the rear wall of the fire box, the crown sheet portions of the water sections adjoining the dividing section being'reduced in rjwidth to form passages connecting the fire box with the flues formed by the flue'openings above the crown V sheet portions,means to connect the outer ends of the upper flues with the outer ends of the lower return fines and means form-. ing two independent smoke outlets from the respective return flues at the rear of' -,the'

boiler and adjoining the dividing section.

2. A sectional boilerformed of two end water sections, a dividing water section midway between said end sect ons, a plurahty of water legs or sections between the end* v sections and the dividing section, each of said water legs being formed with registers ing" apertures forming lateral fiues for I the fire gases, means whereby the gases from one fiue may pass to the other flue at one end oi the boiler section and means whereby the fire gases may escape from said flue into the smoke outlet at one end of said lateral flue,

valved pipe connections to supply water to the lower ends of the water sections and the dividing section.

8. A sectional boiler formed of two end sections, a dividing water section without lateral passageways for the fire gases, the lower edge of said dividing section extending near to the grate and thereby dividing thefire box into two unconnected sections, intermediate water legs or sections provided with registering passages forming laterally extending fines for the travel of the tire gases, the water legs adjoining the dividing section having the .faces which face the dividing section set back or cut away to formfiues at right angles to the lateral passages, said water legs being cut away at their rear portions to form smoke outlets at the rear of the furnace near the dividing section, one of said outlets bein on each side of said dividing section, an controlling said smoke outlets.

4. A boiler comprising a fire box forming a combustion chamber, a central water sec tion dividing the fire box and combustion chamber into two separate parts, a grate for each of the parts of the fire box, a boiler abutting said central section at each side thereof so that said central dividing section forms a common wall between the boilers,

'. external water supplying pipes connected to means for independently both boilers and the dividing section, pipes connectmg together the steam spaces ot the two boilers and the dividing section, and

valves in the aforesaid pipes whereby the extending portion over-hanglng the fire box,-

a rear return water portion and an upwardly extending portion forming the rear wall of Y the fire box, the crown sheet portions of the water sections adjoining the dividing section being reduced in width to form passages connecting the fire box with the fines above the crown sheet portions, and intermediate sections adjoining the dividing section hav ing their rear return water portions cut away to form two independent smoke outlets from the inner ends of the return flues.

In testimony whereof I hereunto afiix my signature in the presence of two witnesses this 16th day of November 1909.

JOHN BLOOMFIELD BERNHARD.

Witnesses:

.J. M. TAYLOR, v

P. B. RICHARDSON. 

